They're After the Screw Soul!
What starts as a severe stomachache on the part of Nejiru and Heybot quickly escalates, as the sky suddenly darkens and a man called Lord Nejikill descends. Using dastardly tactics, Nejikill steals all the Zodiac screws, as well as Heybot's own screw soul and Bungle-Bungle Screw! When things get this bad, there's only one thing that can save our heroes... a new character debut! Source: crunchyroll
Aired 05/03/2017EP 23 - They're After the Screw Soul!
Heybot!
The anime takes place on the screw-shaped island country of Screw Island and follows the "Vocabot" Heybot and his partner, Prince Nejiru as they collect different "Vocab Screws". When the Vocabots wear the Vocab Screws on their heads, they're able to compete in "Vocab Battles," battles for who can think up and tell the best jokes.
(Source: Anime News Network)